Advertisement

Topics

MicroRNA-125b down-regulation mediates endometrial cancer invasion by targeting ERBB2.

06:00 EDT 31st March 2012 | BioPortfolio

Summary of "MicroRNA-125b down-regulation mediates endometrial cancer invasion by targeting ERBB2."

Background: MicroRNAs (miRNAs) are small non-coding nucleotides that regulate mRNA stability and protein expression by imperfect base pairing with the 3'-untranslated region (3'UTR) of target mRNAs. Many miRNAs have been documented to be aberrantly expressed in human cancers, but the role of miRNAs in endometrioid endometrial cancer (EEC) remains poorly understood. The objective of this study was to investigate the effect of miR-125b on EEC development and to explore its molecular mechanism in EEC carcinogenesis. Material/Methods: Real-time quantitative PCR was applied to evaluate the expression level of miRNA-125b in EEC and normal endometrium (NE) samples. The invasion ability of miR-125b in EEC HEC1B cells was analyzed by Transwell assay after pre-miR-125b or anti-miR-125b transfection. For the invasion mechanism analysis of miR-125b on HEC1B cells, miRBase, TargetScan, miRanda and PicTar were used to predict the possible target gene of miR-125b. Luciferase activities assay, cotransfection and Western blot were used to reveal that the predicted target genes of miR-125b were direct and specific. RNA interference technology was used to confirm that the invasion inhibition of miR-125b was directly induced by ERBB2. Results: Our study showed that miR-125b was down-regulated in human EEC specimens compared to that in NC specimens. Over-expression of miR-125b in HEC1B cells inhibited EEC invasion and this inhibitory effect on HEC1B cells could be restored by miR-125b knock down. Mechanism analysis revealed that ERBB2 was a direct and specific target of miR-125b. The inhibitory effect on EEC cell invasion was mediated by miR-125b inhibition of the translation of a proto-oncogene, ERBB2. Conclusions: Aberrantly expressed miR-125b contributes to HEC1B cells invasion partly through directly down-regulating ERBB2 protein expression in EEC. This miRNA signature offers a novel potential therapeutic strategy for EEC.

Affiliation

Department of Neurobiology, China Medical University, Shenyang, P.R. China and Institute of Pathology and Pathophysiology, China Medical University, Shenyang, P.R. China.

Journal Details

This article was published in the following journal.

Name: Medical science monitor : international medical journal of experimental and clinical research
ISSN: 1643-3750
Pages: BR149-155

Links

DeepDyve research library

PubMed Articles [22726 Associated PubMed Articles listed on BioPortfolio]

MiR-125b inhibits anaplastic thyroid cancer cell migration and invasion by targeting PIK3CD.

Emerging evidences indicate that dysregulated microRNAs are implicated in the process of tumorigenesis and progression. The miRNA-125b (miR-125b) is downregulated and identified as tumor supressor in ...

Lower Cystic Fibrosis Transmembrane Conductance Regulator (CFTR) Promotes the Proliferation and Migration of Endometrial Carcinoma.

BACKGROUND The incidence and death rates of endometrial cancer are alarmingly increasing. The diagnosis and treatment of endometrial cancer is crucial to decreasing mortality. Cystic fibrosis transmem...

MicroRNA-125b-5p mediates post-transcriptional regulation of hepatitis B virus replication via the LIN28B/let-7 axis.

MicroRNAs (miRNAs) are able to modulate hepatitis B virus (HBV) replication and play an important role in the pathogenesis of HBV infection. Recently, we have identified that serum miR-125b-5p level c...

Upregulation of microRNA-125b by G-CSF promotes metastasis in colorectal cancer.

Although there are reports of miR-125b being dysregulated in colorectal cancer (CRC) and associated with CRC progression, little is known about its intrinsic regulatory mechanisms. Here we detected th...

The effects of microRNA-183 promots cell proliferation and invasion by targeting MMP-9 in endometrial cancer.

MiRNAs are known to play important roles in cancer cell development. However, the pattern and biological role of miR-183 in endometrial cancer (EC) have not been completely unexplored. Here, we found ...

Clinical Trials [6802 Associated Clinical Trials listed on BioPortfolio]

MicroRNA Mediates Volatile Anesthetics Preconditioning Induced Artery Protection

It has been reported that volatile anesthetics preconditioning mediates protection of organ via microRNA. We want to study on the effects of isoflurane preconditioning on expression of mic...

Local Invasion of Pancreatic Cancer

Pancreatic cancer often spreads through local invasion into local structures, including fat, blood vessels, nerves, and nearby organs (stomach, duodenum, spleen, bile duct). Local microsco...

microRNA of Human Epidermal Growth Factor Receptor 2 (HER2)Positive Patient Treated With Herceptin

This projective observational study is planned to enroll more than 300 advanced breast cancer patients, who were proved as Her-2 positive using fluorescence in situ hybridization (FISH) an...

Physiopathological and Therapeutic Value of microRNA in the Progression of Carotid Artery Plaques: Carotid Protocol and microRNA

Molecular analysis of the atheroma plaque. Screening for a novel biomarker of carotid status.

The Utility of Circulating Tumour Cells and Plasma microRNA in Esophageal Adenocarcinoma

Circulating microRNA (circ miRNA) and circulating tumor cell (CTC) levels are hypothesized to be associated with response to chemoradiation in patients undergoing treatment for locally adv...

Medical and Biotech [MESH] Definitions

Neoplasms of the endometrial stroma that sometimes involve the MYOMETRIUM. These tumors contain cells that may closely or remotely resemble the normal stromal cells. Endometrial stromal neoplasms are divided into three categories: (1) benign stromal nodules; (2) low-grade stromal sarcoma, or endolymphatic stromal myosis; and (3) malignant endometrial stromal sarcoma (SARCOMA, ENDOMETRIAL STROMAL).

A hereditary disease characterized by multiple ectodermal, mesodermal, and endodermal nevoid and neoplastic anomalies. Facial trichilemmomas and papillomatous papules of the oral mucosa are the most characteristic lesions. Individuals with this syndrome have a high risk of BREAST CANCER; THYROID CANCER; and ENDOMETRIAL CANCER. This syndrome is associated with mutations in the gene for PTEN PHOSPHATASE.

The extension of endometrial tissue (ENDOMETRIUM) into the MYOMETRIUM. It usually occurs in women in their reproductive years and may result in a diffusely enlarged uterus with ectopic and benign endometrial glands and stroma.

Tumors or cancer of ENDOMETRIUM, the mucous lining of the UTERUS. These neoplasms can be benign or malignant. Their classification and grading are based on the various cell types and the percent of undifferentiated cells.

Benign proliferation of the ENDOMETRIUM in the UTERUS. Endometrial hyperplasia is classified by its cytology and glandular tissue. There are simple, complex (adenomatous without atypia), and atypical hyperplasia representing also the ascending risk of becoming malignant.

Quick Search
Advertisement
 
DeepDyve research library

Relevant Topic

Head and neck cancers
Cancer can occur in any of the tissues or organs in the head and neck. There are over 30 different places that cancer can develop in the head and neck area. Mouth cancers (oral cancers)  - Mouth cancer can develop on the lip, the tongue, the floor...


Searches Linking to this Article